Mail Delivery failure

Discussion in 'Server Operation' started by swordsaint, Apr 2, 2008.

  1. swordsaint

    swordsaint New Member

    Hi when I send a email to craiglist i get this error message

    host[] said:
    554 <unknown[]>: Client host rejected: rDNS/DNS validation
    failed. Please setup matching DNS and rDNS records:

    But I had my isp comcast make ptr records for my mail server I used dnsstuff to test my ptr record an it says it works

    PASS Reverse DNS entries for MX records OK. The IPs of all of your mail server(s) have reverse DNS (PTR) entries. RFC1912 2.1 says you should have a reverse DNS for all your mail servers. It is strongly urged that you have them, as many mailservers will not accept mail from mailservers with no reverse DNS entry. Note that this information is cached, so if you changed it recently, it will not be reflected here (see the Reverse DNS Tool for the current data). The reverse DNS entries are: [TTL=3600]

    So Im stuck and dont know what to do:confused:
  2. daveb

    daveb Member

    Your rdns is setup for ip x.x.x.252 "" not ip x.x.x.249 from which your mail server seems to be sending from.
  3. swordsaint

    swordsaint New Member

    Thats my routers ip thats strange all my port are forwarded right:confused:

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